| 大气介质对电磁波测距精度的影响 |
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| 引用本文： | 张瑜,郝文辉.大气介质对电磁波测距精度的影响[J].电波科学学报,2006,21(4):632-634,639. |
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| 作者姓名： | 张瑜 郝文辉 |
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| 作者单位： | 1. 河南师范大学物理与信息工程学院,河南,新乡,453007
2. 中国电波传播研究所,河南,新乡,453003 |
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| 摘 要： | 大气介质的不均匀将影响电磁波测距精度.从电磁波相位法测距的基本原理出发,推导了大气介质引起的电磁波测距误差公式,并与高精度的微波测距机在10km基线上测距精度进行了比较,结果证实,即使采用高精度的电磁波测距机,大气介质引起的测距误差也在0.75m～-0.25m之间.因此,在用电磁波进行高精度测距时,必须要测量出基线上精确的大气折射率的分布,才能提高测距精度.
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| 关 键 词： | 电磁波测距 大气折射率 |
| 文章编号： | 1005-0388（2006）04-0632-04 |
| 收稿时间： | 2005-03-16 |
| 修稿时间： | 2005-03-16 |
Effect of atmospheric medium on precise of electromagnetic wave distance measurement |
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| ZHANG Yu,HAO Wen-hui.Effect of atmospheric medium on precise of electromagnetic wave distance measurement[J].Chinese Journal of Radio Science,2006,21(4):632-634,639. |
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| Authors: | ZHANG Yu HAO Wen-hui |
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| Affiliation: | 1. College of Physics Information Engineering, Xinxiang Henan 453007, China ; 2.China Research Institute of Radiowave Propagation, Xinxiang Henan 453003, China |
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| Abstract: | It is well known that atmospheric medium can influence the precise of distance measurement sysytem of electromagnetic wave. This paper deduces an error formula of distance measurement on the basis of the principle of measurement sysytem. By utilizing the measured data from a high-accuracy machine of microwave distance measurement on the 10km base line, it is found that even so this system, the distance error caused from the atmospheric medium reaches 0.75m--0.25m. So, to improve the precise of distance measurement, the distribution of the accurate atmospheric refractivity on the base line has to be worked out. |
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| Keywords: | electromagnetic wave distance measurement atmospheric refractivity |
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